Linking microbial carbon pump capacity and efficacy to soil organic carbon storage and stability under heavy metal pollution
文献类型：期刊论文
| 作者 | Liu Xiao4; Xu Xia5; Ma Tian1 ; Zhou Shiwei4; Bi Xiaoli3; He Hongbo2; Zhang Xudong2; Li Weihuan4
|
| 刊名 | Soil Ecology Letters
 |
| 出版日期 | 2023-06 |
| 卷号 | 5期号:2页码:1-9 |
| 关键词 | Microbial residues Soil microbial carbon pump Carbon sequestration Heavy metals Agricultural soil |
| ISSN号 | 2662-2289 |
| DOI | 10.1007/s42832-022-0140-8 |
| 文献子类 | Article |
| 英文摘要 | Heavy metal pollution can lead to a great loss of soil organic carbon (SOC). However, the microbial mechanisms that link heavy metal pollution to SOC remain poorly understood. Here, we investigated five apple-orchard soils at different distances from a Pb-Zn smelter. After assessing the heavy metal pollution level based on Grade II of the national soil environmental quality standard (China), we found SOC stocks and microbial carbon pump (MCP) capacity (i.e., microbial residue carbon) under medium and heavy pollution levels were significantly lower than those under safe, cordon and light pollution levels. The structural equation model showed causality in the SOC variations linked to pollution level through MCP capacity, which could contribute 77.8% of the variance in SOC storage. This verified MCP capacity can serve as a key parameter for evaluation of SOC storage under heavy metal pollution. Soil MCP efficacy, i.e., the proportion of microbial residue carbon to SOC, also decreased under medium and heavy pollution. This suggested that, with a heavier pollution level, there was a higher rate of reduction of microbial residue carbon in soil than the rate ofreduction of SOC. As MCP efficacy can be a useful assessment of SOC stability, the significantly positive relationship between MCP efficacy and clay content in correlation analysis implied that lower MCP efficacy was correlated with SOC stability under the heavier pollution level. Our studyprovides valuable insights to identify the mechanisms of microbially mediated C transformation processes that are influenced by heavy metal pollution in agroecosystems. |
| WOS关键词 | MICROORGANISMS ; DIVERSITY ; TOXICITY ; BIOMASS ; CHINA |
| WOS研究方向 | Ecology ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000905925900001 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/40054]  |
| 专题 | 中国科学院烟台海岸带研究所 个人在本单位外知识产出 |
| 通讯作者 | Li Weihuan |
| 作者单位 | 1.State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China 2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China 3.Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China 4.College of Agriculture, Ludong University, Yantai 264025, China 5.Department of Ecology, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China |
| 推荐引用方式 GB/T 7714 | Liu Xiao,Xu Xia,Ma Tian,et al. Linking microbial carbon pump capacity and efficacy to soil organic carbon storage and stability under heavy metal pollution[J]. Soil Ecology Letters,2023,5(2):1-9. |
| APA | Liu Xiao.,Xu Xia.,Ma Tian.,Zhou Shiwei.,Bi Xiaoli.,...&Li Weihuan.(2023).Linking microbial carbon pump capacity and efficacy to soil organic carbon storage and stability under heavy metal pollution.Soil Ecology Letters,5(2),1-9. |
| MLA | Liu Xiao,et al."Linking microbial carbon pump capacity and efficacy to soil organic carbon storage and stability under heavy metal pollution".Soil Ecology Letters 5.2(2023):1-9. |
入库方式： OAI收割
来源：烟台海岸带研究所
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